Computing Definition and 683 Threads

So, from what I understand, modern computers use superscalar CPUs which allows the computer to run two instructions on two separate lines of data in parallel. Which in lame man's terms is just: the CPU can run two instructions at the same time. Now, from what I understand, this is also a...

Homework Statement y = x 2sinx Homework EquationsThe Attempt at a Solution Ok, so If I see an x in an exponent, I would want to use ln to 'bring it out', right? ln y = ln (x 2sinx) = ln x + ln 2sinx = ln x + sinx ln2 now I take the derivative : y'/y = 1/x + cosx ln2 multiply both sides...

Homework Statement Compute Derivative y = xx + sin(x) Homework EquationsThe Attempt at a Solution since I have x in the exponent (x^x), I multiply both sides by ln: ln y = ln xx + ln sin(x) the x in the exponent comes out into the front, right? y'/y = x ln x + ln sin (x) using product...

Maybe it is not that specific to social studies when one is talking about document computing tools (which I refer to content-related tools here, e.g. Charting, Visualising, Flowcharting, and Infographing tools, etc), but I really am curious about what specific tools are social studies...

lets say someone had an idea for a fully optical computer; that had a optical cubic processor, that refracted and reflected signals. into a optical "motherboard" (except it was not a flat board, more of a rectangle), how would one go about writing a language for such a thing (lets say a base 8...

There are probably numerous threads like this, I have read them all but I'm still undecided. I am a high school senior and applying to UK universities - I have applied to more than one subject (three, actually: civil, mechanical engineering and computing, all from Imperial College) and received...

I am reading Manfred Stoll's book: Introduction to Real Analysis. I need help with Exercise 2(a) from Stoll's Exercises 6.2 on page 229 ... Exercise 2 reads as follows: I was somewhat puzzled about how to do this exercise ... BUT ... even more puzzled when I read Stoll's hint for solving the...

I'd like an actual example of qbits operations. Supposed we have 3 electrons in superposition of spin up and spin down.. then we have total of 2^3 or 8 combinations of information. Can you give an example of how to manipulate the 8 combinations using classical computer and quantum computer? I...

Do anyone know of a good detailed book or website that would help me learn Python quickly? I have assignments that must be done in Python for one of my physics courses. I'm supposed to know how to do it since last semester but had a greater deal of trouble picking up on it and didn't have much...

please share the best clearest introductory books or articles (like from sci-am or discover magazine with colorful illustrations)) on quantum computing (or quantum computers) like how they are implemented in the hardware. I see thousands of examples of quantum entanglements in books, magazine...

Hi everyone, I am a graduate student in psychology and am working on a research project where I am trying to derive the kinematics of a mouse tracking task. I am currently writing a MATLAB script to do this, and I believe my equations for velocity and acceleration are correct, but I have very...

Hello, Is it possible to build a qubit from an atom with a nuclear spin of zero (ie. 16O, 12C, 32S)? Would it depend on electron spin instead? Thanks!

My question seems like it should be posted in Computer Engineering section, but below is how I found this word. I was reading the textbook: Quantum Computation And Quantum Information - by Michael A. Nielsen and Issac L. Chuang. and I came across with the this word; "1.3.1 Single qubit gates...

I was doing some things in my head the other day (these moments usually don't come out so well :rolleyes:). And I "came up" with the following way to compute the arctangent with imaginary arguments. Consider the identity x2 = - 2, where x = ± i√2. Now rearrange this identity to x2 + 1 = -1...

I have a question set for programming to compute integral for the following unknown function using composite rectangle method, trapezoidal rule and simpsons rule. \int_{0}^{1.8} f(x) dx for h=0.3 and h=0.4 I have a table of results for f(x) and x as follows x=0, 0.3, 0.6, 0.9, 0.12, 0.15...

Can someone explain how to compute the sum of the following series? 1/(n2 + (r-1)2) + 1/(n2 + (r)2) + 1/(n2 + (r+1)2) + ...1/(n2 + (n-1)2)

Hi! (Wave) I want to write an algorithm, that counts the sum of the keys of the nodes of a binary tree, without the use of globals and statics. That's what I have tried: S(NODE *P){ if (P==NULL) return 0; int m=P->data+S(P->left); int n=m+S(P->right); return n; Could you tell me if it...

Hi I am an undergrad student in an Electrical engineering program and going for my masters and undergrad degree at the same time (special program i am in). I an very interested on the hardware side of quantum computing as to have a future career in this field (eventually will go for a PhD). I...

Compute $\displaystyle\lim_{n\to +\infty}\dfrac{1^p+2^p+3^p+\cdots +n^p}{n^{p+1}}.$

Hey everybody, I need to learn Java for a course I'm taking in the spring(my C++ course fulfills the prereq for our java intro to data structures course) and I need to get a working knowledge of java. I've been reading the book for the class I'm not taking, but it's essentially built around a...

A fluid motion has velocity $$\underline{u}=\sin{(at)}\hat{\imath}+\hat{\jmath} \times r +\cos{(at)}\hat{k}$$ I need to know what is $$\hat{\jmath} \times r$$ to find Vorticity and other things.

Hello there, Given any 4-vector ##x = (x_0,x_1,x_2,x_3)##, hvor do I compute its magnitude? I couldn't find a simple explanation online. For example I want to compute the magnitute of the momenergy 4-vector of a photon traveling in the positive x-direction where ##E## is the energy of the...

Homework Statement Let a,b be real with a > 0. Compute the integral I = \int_{-\infty}^{\infty} e^{-ax^2 + ibx}\,dx. Homework Equations Equation (1): \int_{-\infty}^{\infty} e^{-x^2}\,dx = \sqrt{\pi} Equation (2): -ax^2 + ibx = -a\Big(x - \frac{ib}{2a}\Big)^2 - \frac{b^2}{4a}The Attempt...

Hi i just wanted to know what the main difference between quantum computers and normal computers are? Is it that a Qubit can be 1 and 0 at the same time... becaus that is what i found after i researched however my friend states that the quantum computer can run many different sets of code at...

Homework Statement Compute, using wolfram is an option, eitH where H is: ##H = \begin{pmatrix} 0 & -1 & 0 & 0 & 0& 0\\ -1 & 0 & -1 & 0 & 0& 0\\ 0 & -1 & 0 & -1 & 0& 0\\ 0 & 0 & -1 & 0 & -1& 0\\ 0 & 0 & 0 & -1 & 0& -1\\ 0 & 0 & 0 & 0 & -1& 0\\ \end{pmatrix}## Homework...

I'm trying to do a calculation which involves taking the derivative of a term that is millions of terms long. I'm using a supercomputer right now with Mathematica to do it but it's taking to long. Does Matlab have a faster algorithm for computing derivatives analytically?

PHP has some powerful arbitrary-precision (BC or binary calculator) arithmetic functions which seem to be greatly underused and only consist of the basic arithmetic operations, a square root function, a mod function and an integer power function. However, those basic operations can be used to...

Homework Statement Here is the algorithm (which works perfectly) for computing a^n for any integer a and a nonnegative integer n in Pascal-style pseudocode.: k := n; b := 1; c:= a; {a^n = b * (c^k)} while k <> 0 do begin if k mod 2 = 0 then begin k := k div 2; c := c...

Homework Statement Complete the following MATLAB function that computes the integral ##\int_{-2}^{5} f(x)dx## of the function ##f(x)## plotted in the figure below, after N trials using a Monte Carlo method. Take all the required numerical inputs from the figure shown below. Hint: Generate a...

We often get questions here on the lines 'I'm really passionate about physics/philosophy/xyz but I/my parents think the jobs are in computing/engineering/medicine/uvw what should I do? Most often the advice is do what you're really interested in The other day in 'The Times' (UK) was an...

Hi everyone! I have a question for you all. I'm a 3rd year undergraduate math student who took 4 years away from school and I'm going to be returning this Fall(^.^). Prior to leaving school, I'd take courses in C++, Numerical Methods, Two additional semesters of Numerical Analysis, Modern...

I don't understand what is meaning of embedded computing system design embedded system is combination of hardware and software that perform some specific task does embedded system and embedded computing system is different things ? Q what is embedded system design process ?

I'm trying to understand Čech cohomology and for this I'm looking at the example of ##S^1## defined as ##[0,1]/\sim## with ##0 \sim 1##. To compute everything, I have the cover ##\mathcal U## consisting of the sets $$U_0= (0, 2/3) \, , \, U_1= (1/3, 1) \, , \, U_2= (2/3, 1] \cup [0, 1/3)$$...

Hi everyone, I have a rather fundamental question about building oscillator wavefunctions numerically. I'm using Matlab. Since it's 1/√(2nn!∏)*exp(-x2/2)*Hn(x), the normalization term tends to zero rapidly. So for very large N (N>=152 in Matlab) it is zero to machine precision! Though asymptotic...

Greetings, I am attempting to compute geodesic distances on manifolds where structural data have been sparsely sampled. First, off I am not well versed in the mathematics of differential geometry but I do have some knowledge (from an introductory differential geometry class in my...

i can not say that I'm super good at knowing my quantum physics, but i know enough, and even if i don't i can just search it up! so, recently i have taken an interest into the quantum computer , and the theories of how it works, is there anywhere that talks about it?

How is an ancillary bit used in a logic gate? I looked at http://en.wikipedia.org/wiki/Ancilla_(quantum_computing ) as well as Quantum Computation and Quantum Information by Nielsen and Chuang, but neither source really explained how an ancillary bit is used (in a logic gate circuit) or...

I know cloud computer has been around in some form for a good deal of time but all the sudden it is taking off. People are deeming it the future of computing, why is this? what does cloud computing mean for the future of computers and storage et cetera. Thank you

Context: I am entering my Junior year in a computer engineering undergraduate program, and have not yet taken any course involving quantum physics. The only course I am required to take involving quantum physics is Semiconductor Device Physics. I am doing well academically, and am considering...

Hi, this issue came up in another site: We want to compute ( not just ) the deRham cohomology of ## X=\mathbb R^2 - ##{p,q} , but also an explicit generating set for ## H^1 (X) = \mathbb Z (+) \mathbb Z## in deRham cohomology . Only explicit generating set I can see here is {(0, +/-...

Hi, the question is as follows. I wish to calculate all of the different possible combinations of two vectors in regards to Pythagoras theorem. Not just an element by element operation My code is as follows; opposite=(0:30) adjacent=(0:30) hypotenuse=sqrt(x1.^2+y1.^2) When I use...

Homework Statement Homework Equations The Attempt at a Solution I'm trying to calculate Rth so I can compute τ. The problem is that after the switched is flipped for t>0, here is what is left: So you would expect Rth to be 3 ohms but it is actually 2 ohms. Solution for reference:

Suppose we have a Markov chain with stationary distributions ##p_n=\frac{a}{nb+c}p_{n-1}## for ##n\in\mathbb{N}## where ##a,b## and ##c## are some positive constants. It follows that ##p_n=p_0\prod_{i=1}^n\frac{a}{ib+c}##. Normalisation yields...

I did some quick searches and couldn't find any discussions on this topic. Anyone with background or ability to describe the basics to a novice. I understand the high level basic concepts, but don't know how information is encoded and how the qubits are operated on. Unlike boolean logic gates...

Hello, I never tried any cloud solution, and I hardly know what it means. Thanks to the CodeProject newsletter, I read this article comparing the performances of different cloud solutions: http://www.infoworld.com/print/237169 from this reading, I guessed that the cloud might be used...

I want to do a PhD in Quantum Computing. Which universities in English-speaking countries have prominent research groups in this field? Most universities I checked have a Quantum Information group, and they usually mention the term "Quantum Computing" somewhere on their website, but it's not...

Here is the question: I have posted a link there to this thread to the OP can view my work.

Here is the question: I have posted a link there to this thread so the OP can see my work.

Here is the question: I have posted a link there to this thread so the OP can view my work.

Hi, All: Just curious if anyone knows of any online or otherwise software to help compute the wedge of forms, or maybe some method to help simplify. Not about laziness; I don't have that much experience, and I want to double check; I have around 30 terms ( many of which may cancel out) , and...